US2903645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic thickness gauge
Assignee: General Electric Co
•
Filing: 1954-09-28
•
Granted: 1959-09-08
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Expires: 1974-09-28
Abstract
No abstract record available.
Inventors
- 👤 James H Wright
- 👤 Walton E Briggs
- 👤 Sanford M Billings
- 👤 Herbert A Harriman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:40
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/02; G01B7/06; G01B7/10; G01B7/105; Y; Y10; Y10S; Y10S33/00; Y10S33/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US497448A
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US2102409A
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US1626005A
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GB378983A
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US2384529A
Cited
US2318720A
Cited
US2469476A
Cited
US2588143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |